Railway-track structure.



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PATENTED SEPT. 4, 1906. W. M. N.

RAILWAY TRA RUGTURE.

UNITED STATES PATENT Ormes.

WILLIAM MILTON BROWN, OF .IOHNSTOl/VN, PENNSYLVANIA, ASSIGNOR TO THELORAIN STEEL COMPANY, A CORPORATION OF PENNSYLVANIA.

RAILWAY-TRACK STRUCTURE.

Specicaton of Letters Patent.

Patented Sept. 4, 1906.

Application filed January 4,1906. Serial No. 294.551,

To all whom, it may concern,.-

Be it known that I, WILLIAM MILTON BROWN, of Johnstown, Cambria county,Pennsylvania, have invented a new and useful Improvement inRailway-Track AStructures, of which the following is a full, clear, andexact description, reference being had to the accompanying drawings,forming part of this specification, in which- Figure l is a plan view ofa railway-track structure embodying my invention. Fig. 2 is a section onthe line II II of Fig. l, showing one of the keys or fastening memberspartly removed. Fig. 3 is a cross-section on the line III III of Fig. 2,and Fig. 4 is a detail perspective view of one of the fastening membersor keys. Y

My invention has relation to railway-track structures of that class inwhich a removable and renewable center or intersection plate isemployed, and has particular relation to means for removably securingthe plates to the body of the structure, my object being to providefastening means of simple character which can be quickly applied, whichwill hold the plates securely in place under the severe looseningconditions to .which they are subjected in service, and which can bereadily released and removed from the surface of the structure withoutdisturbing the adjacent pavement.

Vith these objects in view my invention consists in the novel structure,arrangement, and combination of parts, all substantially as hereinafterdescribed, and pointed out in the claims.

In the drawings, 2 designates the body portion of a track structure, and3 the diverging rail members thereof, the particular structure shownbeing a frog or curve-cross. The body portion 2 and the rail members 3may be cast in one integral piece, or the rail members may consist ofpieces of rail placed in a mold, with a body portion 2 cast on theiradjacent ends. In either case the structure is provided with a pocket inwhich is seated the intersection-plate 4, having track-sur faces whichare in alinement with the Atracksurfaces of the rail members 3. The sidewalls of this `pocket are provided with inwardly-extending projections5, and the lateral edgesv of the plate 4 are formed with recesses 6 toreceive the projections 5, with a space at each side of each projectionand the adjacent wall of the recess. The edges ofthe projections 5 arepreferably rounded, as shown at 5a, and the end walls of the recesses 6are beveled or inclined, as shown at 6a, to form seats for keys orfastening members 7. These keys or fastening members are each of curvedtapered form, being of the proper shape to be inserted in the seatsabove described, with their central portions extending underneath theprojections 5 and their end portions lying'be tween the edges of theseprojections and the beveled walls 6a and having a wedge-bearing on oneor both of said walls.

The keys 7 are inserted in the manner shown lin Fig. 2 by driving uponthe larger ends thereof until the key comes into the position shown atthe left-hand side of that Iigure. Ordinarily it would be difficult tosecure a proper bearing for these keys or fastening members upon both ofthe inclined surfaces 6aL and rounded edges 5a; but this, in fact, isunnecessary to the proper hold of the key', and a tight wedging bearingis always insured at Aat least one of these piaces. space around andbelow the keys and below the bottom of the plate is preferably filledwith spelter or similar material, as indicated at 8, which prevents anytendency which the keys might otherwise have to shake or jar loose underthe severe pounding action which the plates receive in service.

When it is desired to remove one of the plates, a suitable drift isapplied to the small ends of the keys, and by driving thereon the keyscan be readily driven out, the operation being the reverse of thatemployed when they are inserted.

In the particularstructure shown in the drawings I have shown four ofthese keys, two at each side of the structure but the number used andalso their location will depend upon the shape and size of theintersection-plate, my invention being applicable to various forms loftrack structures, such as tongue-switches, mates, crossings, and slotstructures such as are used in cable and underground electric-trackconstruction.

Other changes in details maybe made without affecting my invention.

The advantages of my invention result from the simplicity of thefastening, the ease with which it can be applied, no special f1tting ofthe parts being required, and in the facility with which the fasteningcan be released from the surface of the structure when necessary.

The

IOO

l. In a railway-track structure, the cornbination with a body portionhaving a pocket and a plate seated therein, said plate and pocket havinginterfitting projections and recesses forming key-seats, of curved andtapered keys adapted to the seats and to be seated by driving upon oneend thereof and to be unseated by driving on the opposite end thereof,said interfitting projections and .recesses being arranged to providebetween thein seats for both end portions of each key 5 substantially asdescribed.

2. In a railway-track structure, the conibination with a body portionhaving a pocket, and a plate seated in the pocket, of tapered curvedkeys engaging adjacent lateral portions of the plate and pocket tosecure the plate in place and arranged to be seated by driving upon oneend and to be unseated by driving on the opposite end, both end portionsof each key being seated between opposing surfaces of the body portionand plate, and the central portion of each key engaging the body portionof the structure; substantially as described.

3. In a railwayetrack structure, the combination with a body portionhaving a pocket, and a lateral projection overlianging the pocket, of aplate seated in the pocket and having a recess to receive the saidprojection, adjacent walls or surfaces of the projection and recessesbeing separated to provide keyseating spaces at each side of theprojection, tapered curved keys seated in said spaces, and engaging saidprojections frein the under side, and means for normally preventing thekeys froin jarring loose; substantially as described.

4. In a railway-track structure, a body portion having a pocket whoselateral wall is formed with an inward overhanging proj eetion, a platehaving a recess embracing the projection, key-seats formed by theprojection and the adjacent walls of the recess, and a tapered curvedkey adapted to said seats, and to extend underneath the said projection;substantially as described.

In testimony whereof I have hereunto set niy hand.

WILLIAM MILTON EROI/VN. lVitnesses Jnssn B. HELLER, H. W. SMITH.

